Four Tulasnella species are associated with populations of the Australian evergreen terrestrial orchid Cryptostylis ovata
Publication date: Available online 23 October 2019Source: Fungal BiologyAuthor(s): D.Q. Nguyen, Hua Li, T.T. Tran, K. Sivasithamparam, M.G.K. Jones, S.J. WylieAbstractOf the more than 400 indigenous orchid species in Western Australia, Cryptostylis ovata is the only species that retains its leaves all year round. It exists as a terrestrial herb and occasionally as an epiphyte in forested areas. Like all terrestrial orchids, C. ovata plants associate with mycorrhizal fungi, but their identities have not previously been investigated. Fungi were isolated from pelotons in rhizomes collected from three southern and two northern...
Source: Fungal Biology - October 23, 2019 Category: Biology Source Type: research
Light regulates a Phycomyces blakesleeanus gene family similar to the carotenogenic repressor gene of Mucor circinelloides
Publication date: Available online 23 October 2019Source: Fungal BiologyAuthor(s): Víctor G. Tagua, Eusebio Navarro, Gabriel Gutiérrez, Victoriano Garre, Luis M. CorrochanoAbstractThe transcription of about 5-10% of the genes in Phycomyces blakesleeanus is regulated by light. Among the most up-regulated we have identified four genes, crgA-D, with similarity to crgA of Mucor circinelloides. The crgA gene encodes a repressor of light-inducible carotenogenesis. The four proteins have the same structure with two Ring Finger domains and a LON domain, suggesting that they could act as ubiquitin ligases, as their M. circinelloi...
Source: Fungal Biology - October 23, 2019 Category: Biology Source Type: research
Insight into a highly polymorphic endophyte isolated from the roots of the halophytic seepweed Suaeda salsa: Laburnicola rhizohalophila sp. nov. (Didymosphaeriaceae, Pleosporales)
Publication date: Available online 16 October 2019Source: Fungal BiologyAuthor(s): Zhilin Yuan, Irina S. Druzhinina, Xinyu Wang, Xiaoguo Zhang, Long Peng, Jessy LabbéAbstractWe surveyed root endophytic fungi of the coastal halophyte Suaeda salsa and detected a population of a novel species that we described here as Laburnicola rhizohalophila sp. nov. No sexual sporulating structure was observed. Instead, it produced a large amount of thalloconidia, 0-1 transverse septa, hyaline to darkly pigmented, often peanut-shaped and sometimes dumbbell-shaped, both ends enlarged with numerous oil droplets inside the hyphal cells. Sur...
Source: Fungal Biology - October 19, 2019 Category: Biology Source Type: research
Metabolic coupling in the co-cultured fungal-yeast suite of Trametes ljubarskyi and Rhodotorula mucilaginosa leads to hypersecretion of laccase isozymes
This study allows us to deepen and refine our understanding of fungal-yeast symbiotic interaction; further, it also establishes a mutual relation by metabolic coupling for 10-fold higher laccase isozyme secretion (6532 U/ml). The purified laccase isozymes showed acidic pH optima (pH 3–4), higher thermo-stability (60 °C), and broad enzyme kinetics (Km) values. Our study also provides an in-depth understanding of laccase isozymes and their potential to degrade synthetic dyes, which may help the fungi to survive in an adverse environment. (Source: Fungal Biology)
Source: Fungal Biology - October 19, 2019 Category: Biology Source Type: research
In Saccharomyces cerevisiae, withdrawal of the carbon source results in detachment of glycolytic enzymes from the cytoskeleton and in actin reorganization
Publication date: Available online 17 October 2019Source: Fungal BiologyAuthor(s): E. Espinoza-Simón, N. Chiquete-Félix, L. Morales-García, U. Pedroza-Dávila, X. Pérez-Martínez, D. Araiza-Olivera, F. Torres-Quiroz, S. Uribe-CarvajalAbstractMetabolons are dynamic associations of enzymes catalyzing consecutive reactions within a given pathway. Association results in enzyme stabilization and increased metabolic efficiency. Metabolons may use cytoskeletal elements, membranes and membrane proteins as scaffolds. The effects of glucose withdrawal on a putative glycolytic metabolon/F-actin system were evaluated in three Sacc...
Source: Fungal Biology - October 19, 2019 Category: Biology Source Type: research
Bacterial decomposition of insects post-Metarhizium infection, possible influence on plant growth
Publication date: Available online 15 October 2019Source: Fungal BiologyAuthor(s): Vadim Y. Kryukov, Marsel R. Kabilov, Natalia Smirnova, Oksana G. Tomilova, Maksim V. Tyurin, Yuriy B. Akhanaev, Olga V. Polenogova, Viktor P. Danilov, Saule K. Zhangissina, Tatiana Alikina, Olga N. Yaroslavtseva, Viktor V. GlupovAbstractStrains of entomopathogenic fungi may have substantial differences in their final stages of mycosis. Insect cadavers are usually overgrown with mycelium after colonization of the insect body, but in many cases, bacterial decomposition of the colonized hosts occurs. We used two Metarhizium robertsii strains in...
Source: Fungal Biology - October 16, 2019 Category: Biology Source Type: research
Crosstalk between S. cerevisiae SAPKs Hog1 and Mpk1 is mediated by glycerol accumulation
In this study, we show that hyperactivation of Mpk1 in a ptp2 ptp3 null mutant is an indirect consequence of Hog1 hyperactivation, which induces accumulation of intracellular glycerol and an attendant hypo-osmotic stress. Mpk1 hyperactivity in the absence of PTP2 and PTP3 was suppressed by a hog1 null mutation, or by restoration of osmotic balance with a constitutive form of the glycerol channel Fps1. We found similarly that activation of Mpk1 in response to zymolyase treatment is partly a consequence of Hog1-driven glycerol accumulation. Thus, we have identified two conditions in which glycerol serves as a mediator of cro...
Source: Fungal Biology - October 16, 2019 Category: Biology Source Type: research
Editorial Board
Publication date: November 2019Source: Fungal Biology, Volume 123, Issue 11Author(s): (Source: Fungal Biology)
Source: Fungal Biology - October 16, 2019 Category: Biology Source Type: research
Characterization of gfdb, putatively encoding a glycerol 3-phosphate dehydrogenase in Aspergillus nidulans
Publication date: Available online 11 October 2019Source: Fungal BiologyAuthor(s): Anita Király, Csaba Hámori, Gyöngyi Gyémánt, Katalin E. Kövér, István Pócsi, Éva LeiterAbstractThe genome of Aspergillus nidulans accommodates two glycerol 3-phosphate dehydrogenase genes, gfdA and gfdB. Previous studies confirmed that GfdA is involved in the osmotic stress defence of the fungus. In this work, the physiological role of GfdB was characterized via the construction and functional characterization of the gene deletion mutant ΔgfdB. Unexpectedly, ΔgfdB strains showed oxidative stress sensitivity in the presence of a s...
Source: Fungal Biology - October 13, 2019 Category: Biology Source Type: research
High Specificity Of A Rare Terrestrial Orchid Toward A Rare Fungus Within The North American Tallgrass Prairie
Publication date: Available online 4 October 2019Source: Fungal BiologyAuthor(s): Jaspreet Kaur, Lela Andrews, Jyotsna SharmaAbstractThe Orchidaceae are globally distributed and represent a diverse lineage of obligate mycotrophic plants. Given their dependence upon specific fungi for seed germination or plant development, composition of soil fungal communities is expected to influence the distribution and persistence of orchid species though simultaneous characterization of orchid mycorrhizal fungal (OMF) communities in roots and in soil is rarely reported. To explain the OMF co-distributions in orchid roots, orchid occupi...
Source: Fungal Biology - October 5, 2019 Category: Biology Source Type: research
Fungal community associated with adults of the chestnut gall wasp Dryocosmus kuriphilus after emergence from galls: taxonomy and functional ecology
Publication date: Available online 4 October 2019Source: Fungal BiologyAuthor(s): Carmen Morales-Rodriguez, Ivano Sferrazza, MariaPia Aleandri, Matteo Dalla Valle, Tommaso Mazzetto, Stefano Speranza, Mario Contarini, Andrea VanniniAbstractThe diversity of the fungal community associated with adults of Dryocosmus kuriphilus following emergence was examined using HTS analysis. Ascomycota dominated the fungal core-biome community. The functional guilds of the 90 taxa forming the core-biome were assessed, demonstrating three main groups: saprotrophs, plant pathogens and entomopathogens. Twenty-nine OTUs out of 90 were resolved...
Source: Fungal Biology - October 5, 2019 Category: Biology Source Type: research
Adaptation of subpopulations of the Norway spruce needle endophyte Lophodermium piceae to the temperature regime
Publication date: Available online 28 September 2019Source: Fungal BiologyAuthor(s): Michael M. Müller, Leena Hamberg, Tatjana Morozova, Alexander Sizykh, Thomas SieberSummaryLophodermium piceae represents the most common Norway spruce needle endophyte. The aim of this study was to find out whether subpopulations of L. piceae in climatically different environments (in which Norway spruce occurs natively) are adapted to local thermal conditions. L. piceae’s ability for thermal adaptation was investigated by determining growth rates of 163 isolates in vitro at four different temperatures: 2, 6, 20 and 25°C. Isolates were...
Source: Fungal Biology - September 29, 2019 Category: Biology Source Type: research
Antimicrobial and antioxidative potential of free and immobilised cellobiose dehydrogenase isolated from wood degrading fungi
Publication date: Available online 24 September 2019Source: Fungal BiologyAuthor(s): Justyna Sulej, Monika Osińska-Jaroszuk, Magdalena Jaszek, Marcin Grąz, Jolanta Kutkowska, Anna Pawlik, Agata Chudzik, Renata BancerzAbstractCellobiose dehydrogenase (CDH, EC 1.1.99.18) is a glycoprotein having many biotechnological applications. In the present study, CDHs isolated from Phlebia lindtneri (PlCDH), Phanerochaete chrysosporium (PchCDH), Cerrena unicolor (CuCDH), and Pycnoporus sanguineus (PsCDH) were studied the first time for their ability to generate antioxidant and antimicrobial agents. The aim of the research was to eval...
Source: Fungal Biology - September 25, 2019 Category: Biology Source Type: research
Presence and Distribution of Insect-Associated and Entomopathogenic Fungi in a Temperate Pine Forest Soil: an Integrated Approach
This study assessed differences in the diversity and abundance of entomopathogenic and insect-associated fungi at a loblolly pine research forest in North Carolina, USA using culture-dependent sampling methods and next generation sequencing libraries. Fungi were baited using Galleria mellonella larvae, and soil samples were diluted and placed on a selective medium containing cycloheximide, chloramphenicol, and thiabendazole. Isolates from both methods were identified using Sanger sequencing of the ITS and LSU rRNA gene regions. These isolates represented three phyla—Ascomycota, Basidiomycota and Mucoromycota—and a tota...
Source: Fungal Biology - September 24, 2019 Category: Biology Source Type: research
Genetic diversity of the Metarhizium anisopliae complex in Colima, Mexico, using microsatellites
This study contributes to generating valuable information about the community structure and genotypic diversity of Metharhizum species in the state of Colima, Mexico, which is needed for the selection of candidates with potential in the biological control strategies against specific insect pests. (Source: Fungal Biology)
Source: Fungal Biology - September 21, 2019 Category: Biology Source Type: research
